Samuel roebuck



(No Model.)

- S. ROEBUUK.

WINDOW SCREEN. No. 482,811. Patented Sept. 20, 1892.

a, a a, c i i l W W\ W I l E :1 $W

UNITED STATES PATENT OFFIC SAMUEL ROEBUCK, OF NEW YORK, N. Y.

WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 482,811, dated September 20, 1892.

Application filed June 9, 1892. Serial No. 436,130. (No model.)

' To all whom it may concern:

Be it known that I, SAMUEL RoEBUcK, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Vindow- Screens; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to that type of windowscreen composed of two coupled and guided sections which slide laterally upon one another to adapt the screen to the Width of the window-frame into which it is to be fitted; and its object is to avoid the liability of one section binding upon the other at the points where the coupling-plates are applied; also, to lessen the expense of applying the plates to the screen and to relieve the fasteningscrews of said plates from strain as far as possible.

In the accompanying drawings, Figure l is a perspective view of myimproved screen as partly extended. Fig. 2 is an enlarged verti cal cross-section of the upper portion of the screen, taken in the line of a coupling and guiding plate. Fig. 3 is a vertical section in the line 00 a; of Fig. 2. Fig. 4 is a section in the line as no of Fig. 2. Fig. 5 is a perspective view of the coupling and guiding plate detached from the screen, but with the fastening-screw in its position as when inserted through the plate and into the frame of a screen-section; and Fig. 6 is a broken top view of the screen, as shown in Figs. 1, 2, 3, and 4.

A A in the drawings indicate two screensections, which when coupled together form an ordinary expansible and contractible screen. The vertical bar a at one side of each screen is set inward from the ends of the top and bottom bars, so that when the screen is expanded these two bars will stand directly opposite each other and there will be a lap of the upper and lower bars upon one another to a considerable extent and the desired rigidity and firmness be secured. In the inner faces of the frame-pieces of the sections rectangular channels 0. are cut, and the woven wire-netting b is secured therein by means of strips 0, as shown. In the upper and lower edges of the top and bottom frame-pieces longitudinal rectangular channels cl are cut from end to end, and in the same limitation-stops e are placed, one channel being in eachframepiece, and in these channels I fit coupling and guiding plates B B, one set of the plates, those B, being attached by screws f to lapplng ends of the section A and the other set by similar screws f to the section A. The plates are novel in construction, being corrugated, so as to have two spaced U shaped tongue portions g 9, one of which serves as a guide and the other as a fastening means, the fasteningtongues g entering the channels of sections A A and the guiding-tongues g the channels of the sections A A. The screws f pass through the U-shaped tongues g into the frame-pleces of the sections A A, and their head portions are beveled and just large enough to lodge flush or level with the top of one of the sets of plates and with the bottom of the other set of plates, and thus act to hold the corrugated tongues g firmly against the side walls as well as the bottoms of the channels of the top and bottom frame-pieces, while the guiding tongues g in channels of sections A A are kept parallel with the walls of the tonguechannels (Z. By this mode of fixing and confining the plates they are firmly held, and at the same time any strain which would come upon the screws f is received by them. The great benefit of this mode of fastening the plates is that the guiding-tongues, while entered in the channels of the sectionsA A, are kept from vibrating on the screws, and thus are prevented from assuming an oblique position with respect tothe guiding-channels, which would cause a bind between the guides and the screen-sections while lateral adjustments are being made for the purpose of expandin g or contracting the width of the screen. I also have made the plates with a fiat bearing-surface at h and an arched bearing-surface at h. This is effected by swaging or depressing the metal in an inverted arched or crown form on that part which is lateral to the fiat bearing portion h. This gives two relieved surfaces, one at each end of the plate, and simply a rocker-like contact at the middle thereof. By this construction the sliding section has but the minimum of contact with the plate, and consequently there is but little liability of binding between the plates and the sliding sections. This improvement is found of great utility, as it is a very serious objection to screens to have them stick and hang at the couplings when it is desired to expand or contract them. By this feature of construction,with the additional one of keeping the plates true and free from liability of shifting on the screw-fastenings from a parallel position with the walls of the channels, I am enabled to furnish at a very small cost a very convenient and durable, expansible, and eontractible screen.

What I claim as my invention is- 1. The expansible window-screen coupling and guide, consisting of a corrugated plate B, constructed of a form whereby it can be applied upon the channeled edges of an expansible window-screen and provided with a fastening-tongue, a guiding-tongue, and with a passage for a fastening screw, andalso with a flat bearing portion 'h and aninverted arch or crown shaped portion h, thesaid plate being fastened by one end to one of the channeled sections of the screen and loosely connected by one of its tongues to the other channeled section and serving for coupling and truly guiding said sections with a minimum of frictional contact, substantially as described.

2. The corrugated plates B, having, respectively, a flat bearing portion h and an inverted arch or crown shaped portion h and formed with fastening-tongues g and guiding-tongues g, in combination with the sliding channeled seetionsA A of an expansible window-screen, said sections receiving into their channels the tongues of the plate, and with fasteningserews having heads a little greater in diameter than the lower portion of the spaces between the side walls of the fastening-tongues, 0

substantially as described.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

SAMUEL ROEBUCK. Witnesses:

VINCENT ROSEMON, SAMUEL HENRY ROEBUCK. 

